TOTAL VOLUME:

$154.4b

24H VOL:

$290,393,159

24H TRANSACTIONS:

2,984,640,614

OPEN INTEREST:

$1,944,100,805

420,493

Markets across

40,511

events

MATCHED EVENTS:

4,612

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

BETA
Dashboards
Tour
All
Sports
Japan Women's Open: Katie Boulter vs Katerina Siniakova
polymarket

What is the result of Katie Boulter vs Katerina Siniakova?

Volume:
$135,450

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set Handicap +/-1.5

 - Polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set Handicap +/-1.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 24, 2026

Closed: Oct 24, 5:47 AM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set Handicap +/-1.5

View
100%
Yes 100¢No 0¢
—
N/A
$474
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

100%
Yes 100¢No 0¢
—
N/A
$105
N/A
N/A
N/A
Settled
Yes
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Game Spread +/-2.5

100%
Yes 100¢No 0¢
—
N/A
$30
N/A
N/A
N/A
Settled
Yes
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova

0%
Yes 0¢No 100¢
—
N/A
$127,245
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 1 Winner

0%
Yes 0¢No 100¢
—
N/A
$3,315
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Match O/U 22.5

0%
Yes 0¢No 100¢
—
N/A
$2,090
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Match O/U 21.5

0%
Yes 0¢No 100¢
—
N/A
$1,400
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 2 Winner

0%
Yes 0¢No 100¢
—
N/A
$442
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Total Sets: O/U 2.5

0%
Yes 0¢No 100¢
—
N/A
$348
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set Handicap +/-1.5

0%
Yes 0¢No 100¢
—
N/A
$1
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 1 O/U 8.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 1 O/U 9.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 1 O/U 10.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 2 O/U 8.5

100%
Yes 100¢No 0¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 2 O/U 9.5

100%
Yes 100¢No 0¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Set 2 O/U 10.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Japan Women's Open: Katie Boulter vs Katerina Siniakova Match O/U 23.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
Total markets: 17

Description

This market refers to the tennis match between Katie Boulter and Katerina Siniakova in the Japan Women's Open, originally scheduled for October 24, 2026 at 12:30AM ET. This market will resolve to 'Katie Boulter' if Katie Boulter advances against Katerina Siniakova. This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Katie Boulter. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 7, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.

Polymarket

This market refers to the tennis match between Katie Boulter and Katerina Siniakova in the Japan Women's Open, originally scheduled for October 24, 2026 at 12:30AM ET. This market will resolve to 'Katie Boulter' if Katie Boulter advances against Katerina Siniakova. This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Katie Boulter. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 7, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.

Frequently asked questions

On Polymarket, the dashboard for the Boulter vs Siniakova match tracks the current odds reflecting trader sentiment, along with a price history showing how those odds have changed over time. You can also see the 24-hour trading volume, which indicates how much activity there has been on this market recently. Currently, the total volume is $135,450 and the 24-hour volume is $135,430. This information provides a real-time view of how people are predicting the outcome of this tennis match.

Prediction market odds often offer a different perspective than traditional sportsbooks. Sportsbooks set lines to balance action and ensure profit, while this market reflects the collective wisdom of traders who are incentivized to make accurate predictions. Often, you’ll find that prediction markets move more quickly to incorporate new information, as traders react rapidly to any developments affecting the Boulter vs Siniakova match. Discrepancies can arise due to differing opinions on player form, potential injuries, or even weather conditions, offering potential arbitrage opportunities for informed bettors.

This market resolves around Oct 31, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Boulter vs Siniakova match as reported by official tournament organizers. The player who wins the match will determine the winning outcome in this market. It’s important to note that any potential delays or cancellations of the match could affect the resolution timeline, but the outcome will always be determined by the official result.

Several factors could significantly influence this market before the match concludes. Any news regarding player injuries to either Katie Boulter or Katerina Siniakova would likely cause a shift in the odds. Changes in weather conditions at the tournament location could also play a role, especially if one player prefers certain conditions over the other. Furthermore, updates on their recent performance in other matches, or even strategic announcements about their playing style, could all contribute to movement in this market. Unexpected retirements during the match would also immediately resolve the market.